85003499520 has 672 divisors, whose sum is σ = 312592316400. Its totient is φ = 22167945216.

The previous prime is 85003499519. The next prime is 85003499527. The reversal of 85003499520 is 2599430058.

85003499520 is a `hidden beast` number, since 8 + 5 + 0 + 0 + 34 + 99 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85003499527) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 440432544 + ... + 440432736.

Almost surely, 2^85003499520 is an apocalyptic number.

85003499520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85003499520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156296158200).

85003499520 is an abundant number, since it is smaller than the sum of its proper divisors (227588816880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85003499520 is an equidigital number, since it uses as much as digits as its factorization.

85003499520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 85003499520 in words is "eighty-five billion, three million, four hundred ninety-nine thousand, five hundred twenty".